April weather forecast
Phúc Hải, Vietnam

April, the same as March, is a moderately hot spring month in Phúc Hải, Vietnam, with an average temperature fluctuating between 29.8°C (85.6°F) and 23°C (73.4°F).

Temperature

With the onset of April, Phúc Hải's average high-temperature experiences a slight rise, moving from March's moderately hot 26.1°C (79°F) to a still warm 29.8°C (85.6°F). In April, Phúc Hải experiences an average nighttime temperature of 23°C (73.4°F).

Heat index

For most parts of April, the heat index is estimated at a torrid 37°C (98.6°F). Greater safety measures are needed, risk of heat exhaustion and heat cramps is high. Continuous activity might trigger heatstroke.
Note that heat index values are valued for light wind and location in the shade. A rise in the heat index by 15 Fahrenheit (8 Celsius) degrees may result from direct sunlight exposure.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. This effect is personal, shaped by the individual's physical activity and heat sensitivity, influenced by factors including wind, clothing, and metabolic variances. Remember, direct sunlight exposure can heighten the heat impact and might increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Young children are more at risk than adults since they tend to sweat less. Moreover, their large skin surface in proportion to their small bodies and the high heat production due to their activities contribute to their vulnerability.
To combat high temperatures, the human body perspires and relies on sweat evaporation for cooling. With high air temperature and humidity (high heat index) conditions, sweat production is restricted, leading to an amplified perception of heat. When body temperature rises due to an imbalance in heat gain, there's a potential for dehydration and overheating.

Humidity

In April, the average relative humidity in Phúc Hải is 78%.

Rainfall

In Phúc Hải, in April, during 13.1 rainfall days, 30mm (1.18") of precipitation is typically accumulated. Throughout the year, there are 190.2 rainfall days, and 828mm (32.6") of precipitation is accumulated.

Daylight

The average length of the day in April is 12h and 38min.
On the first day of April, sunrise is at 05:46 and sunset at 18:08. On the last day of the month, sunrise is at 05:23 and sunset at 18:17 +07.

Sunshine

In Phúc Hải, Vietnam, the average sunshine in April is 9.6h.

UV index

April through September, with an average maximum UV index of 7, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for the average person.
Note: The daily maximum UV index of 7 in April interprets into the following advice:
Stand by precautions and apply sun safety measures. Evading sunburn is of great importance. Be aware that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. and try to reduce direct sun exposure during this period as much as possible. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.